{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["application", "process characterization", "manufacturing standard", "machine or equipment", "enabling technology", "engineering feature"], "input": "For many machines , flat and curved surfaces can appear different due to the stair-stepping phenomena ."}
{"application": [], "process characterization": [], "manufacturing standard": [], "machine or equipment": ["machines"], "enabling technology": [], "engineering feature": []}